Pro active's giving me reaaallly dry skin? anyone know any good skincare?

I've been using Pro-active about 3 weeks or so and since I've started it's really dried out my skin, it's VERY flaky, dry and tight! It doesn't feel or look healthy and I can't really wear make up because when I do you can see how dried up it is. My skin has never been this bad (it was badly congested with acne around my mouth like a rash-which is why I started proactive) I did have a bit of acne when I was a young teen but it went away after a course of tablets and I've been fine for years maybe just an odd spot or two nothing serious. I'm now on a new skin tablet for the first time in ages which isn't working as well as my other tablet I used back home in Ireland, and I have been under stress and not sleeping much at all so should I ditch pro-active and just use something less harsh like Lancome or something?